Update model with baseline

.gitignore

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+.idea
+altos

data/dev/metadata.jsonl

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+oid sha256:e7a08de61cf70feeb2797c44f55eff3645eb83dae61857eefeb637d2d6274b74
+size 4433417

data/test/metadata.jsonl

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+oid sha256:b47a9740332f97e41784c67d48ecc73378e9d22afef7d4e97ba3a257db1a54cf
+size 5752239

data/train/metadata.jsonl

@@ -1,3 +1,3 @@
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-oid sha256:582da2a53b6f56cc5a896907e43c13e68d917f1ff3a6a67db256bb4d3b30ec7b
-size 33576212
+oid sha256:d7eb400c3e995dd0787a022521b5a469318f08ab06dbd21523f03b4be4f18506
+size 33611067

src/alto.py

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+import os
+
+from datasets import load_dataset
+from dataclasses import dataclass, field
+import tqdm.auto as tqdm
+from typing import List, Dict, Set
+from jinja2 import Environment, FileSystemLoader
+from shapely.geometry import Polygon
+import itertools
+
+# Load the Jinja2 template
+env = Environment(loader=FileSystemLoader('.'))
+template = env.get_template('template.xml')
+
+ds = load_dataset("CATMuS/medieval-segmentation")
+
+RATIO = .05
+
+
+@dataclass
+class Tag:
+    idx: str
+    label: str
+    element_type: str
+
+
+@dataclass
+class Line:
+    idx: str
+    bbox: List[int]
+    polygons: List[int]
+    category: str
+    baseline: List[int]
+
+    @property
+    def simple_polygon(self):
+        x = list(
+            map(
+                int,
+                itertools.chain(
+                    *Polygon(
+                        list(zip(self.polygons[::2], self.polygons[1::2]))  # Flat list to list of points
+                    ).simplify(RATIO * self.height).exterior.coords
+                )
+            )
+        )[:-2]  # Polygon repeats the starting point
+        return x
+
+    @property
+    def hpos(self):
+        return self.bbox[0]
+
+    @property
+    def vpos(self):
+        return self.bbox[1]
+
+    @property
+    def width(self):
+        return self.bbox[2] - self.bbox[0]
+
+    @property
+    def height(self):
+        return self.bbox[3] - self.bbox[1]
+
+
+@dataclass
+class Block:
+    idx: str
+    bbox: List[int]
+    polygons: List[int]
+    category: str
+    lines: List[Line] = field(default_factory=list)
+
+    @property
+    def hpos(self):
+        return self.bbox[0]
+
+    @property
+    def vpos(self):
+        return self.bbox[1]
+
+    @property
+    def width(self):
+        return self.bbox[2] - self.bbox[0]
+
+    @property
+    def height(self):
+        return self.bbox[3] - self.bbox[1]
+
+
+for split in ds:
+    print(f"Split: {split}")
+    os.makedirs(f"altos/{split}", exist_ok=True)
+    for image_idx, image in enumerate(tqdm.tqdm(ds[split])):
+        blocks: Dict[str, Block] = {}
+        tags: Dict[str, Tag] = {}
+        print(image)
+        for idx, bbox, polygons, category, typ, parent, baseline in zip(*[
+            image["objects"][key]
+            for key in ['id', 'bbox', 'polygons', 'category', 'type', 'parent', "baselines"]
+        ]):
+            if category and category not in tags:
+                tags[category] = Tag(f"LABEL_{len(tags)}", category, typ)
+
+            if typ == "block":
+                blocks[idx] = Block(idx, bbox, polygons, category)
+            else:
+                if parent == None:
+                    blocks[None] = Block(None, [], [], "")
+                blocks[parent].lines.append(
+                    Line(idx, bbox, polygons, category)
+                )
+        image["image"].save(f"./altos/{split}/image-{image_idx:04}.jpg")
+        with open(f"./altos/{split}/image-{image_idx:04}.xml", "w") as f:
+            f.write(
+                template.render(
+                    blocks=blocks,
+                    image=image,
+                    path=f"image-{image_idx:04}.jpg",
+                    tags=tags
+                )
+            )
+        break

src/template.xml

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+<alto xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns="http://www.loc.gov/standards/alto/ns-v4#"
+    xsi:schemaLocation="http://www.loc.gov/standards/alto/ns-v4# http://www.loc.gov/standards/alto/v4/alto-4-3.xsd">
+    <Description>
+        <MeasurementUnit>pixel</MeasurementUnit>
+        <sourceImageInformation>
+            <fileName>{{ path }}</fileName>
+        </sourceImageInformation>
+        <OCRProcessing>
+            <ocrProcessingStep>
+                <processingSoftware>
+                    <softwareName>Kraken</softwareName>
+                </processingSoftware>
+            </ocrProcessingStep>
+        </OCRProcessing>
+    </Description>
+    <Tags>
+        {% for tag in tags.values() %}
+            <OtherTag ID="{{tag.idx}}" LABEL="{{tag.label}}" DESCRIPTION="{{tag.element_type}} type {{tag.label}}"/>{% endfor %}
+    </Tags>
+    <Layout>
+        <Page WIDTH="{{ image.width }}" HEIGHT="{{ image.height }}" PHYSICAL_IMG_NR="1">
+            <PrintSpace HPOS="0" VPOS="0" WIDTH="{{ image.width }}" HEIGHT="{{ image.height }}">
+                {% for bid, block in blocks.items() %}
+                <TextBlock ID="{{ bid or 'anonymous' }}" {%if block.category%}TAGREFS="{{tags[block.category].idx}}" {% endif%} {% if block.bbox %} HPOS="{{ block.hpos }}" VPOS="{{ block.vpos }}" WIDTH="{{ block.width }}" HEIGHT="{{ block.height }}" {% endif %}>
+                    {%-if block.bbox %}<Shape><Polygon POINTS="{{ block.polygons|join(" ") }}" /></Shape>{% endif -%}
+                    {% for line in block.lines %}<TextLine ID="{{ line.idx }}" {%if block.category%}TAGREFS="{{tags[line.category].idx}}" {% endif%}  HPOS="{{ line.hpos }}" VPOS="{{ line.vpos }}" WIDTH="{{ line.width }}" HEIGHT="{{ line.height }}" BASELINE="{{line.baseline}}">
+                        <Shape><Polygon POINTS="{{ line.simple_polygon|join(" ") }}" /></Shape>
+                    </TextLine>
+                    {% endfor %}
+                </TextBlock>
+                {% endfor %}
+            </PrintSpace>
+        </Page>
+    </Layout>
+</alto>